用plotly画一张图，要求是一段空间曲线，然后在其中的某一点，标注出该点的切向量，主法向量和副法向量

好的，我可以帮您用Plotly画一张这样的图。以下是示例代码：

import plotly.graph_objects as go
import numpy as np

# 生成曲线上的点
t = np.linspace(0, 2 * np.pi, 1000)
x = np.sin(t)
y = np.cos(t)
z = t

# 计算切向量、主法向量和副法向量
dx_dt = np.cos(t)
dy_dt = -np.sin(t)
dz_dt = np.ones_like(t)

dr_dt = np.array([dx_dt, dy_dt, dz_dt])
dr_dt_norm = np.linalg.norm(dr_dt, axis=0)
tangent_vector = dr_dt / dr_dt_norm

d2x_dt2 = -np.sin(t)
d2y_dt2 = -np.cos(t)
d2z_dt2 = np.zeros_like(t)

d2r_dt2 = np.array([d2x_dt2, d2y_dt2, d2z_dt2])
d2r_dt2_norm = np.linalg.norm(d2r_dt2, axis=0)
normal_vector = d2r_dt2 / d2r_dt2_norm

binormal_vector = np.cross(tangent_vector, normal_vector)

# 绘制曲线和向量
fig = go.Figure()

fig.add_trace(go.Scatter3d(
    x=x, y=y, z=z,
    mode='lines',
    name='Curve',
))

point_of_interest = 500  # 选取曲线上的一个点
fig.add_trace(go.Scatter3d(
    x=[x[point_of_interest]], y=[y[point_of_interest]], z=[z[point_of_interest]],
    mode='markers',
    name='Point of Interest',
))

# 在该点处绘制切向量、主法向量和副法向量
vector_scale = 0.25  # 向量缩放比例
vector_color = ['red', 'green', 'blue']  # 向量颜色

for vector, color, name in zip([tangent_vector[:, point_of_interest], normal_vector[:, point_of_interest], binormal_vector[:, point_of_interest]], vector_color, ['Tangent Vector', 'Normal Vector', 'Binormal Vector']):
    fig.add_trace(go.Cone(
        x=[x[point_of_interest]], y=[y[point_of_interest]], z=[z[point_of_interest]],
        u=[vector[0] * vector_scale], v=[vector[1] * vector_scale], w=[vector[2] * vector_scale],
        sizemode='absolute',
        sizeref=0.1,
        anchor='tail',
        showscale=False,
        colorscale=[[0, color], [1, color]],
        name=name,
    ))

fig.update_layout(
    scene=dict(
        xaxis=dict(title='X'),
        yaxis=dict(title='Y'),
        zaxis=dict(title='Z'),
        aspectratio=dict(x=1, y=1, z=0.3),
        camera=dict(
            eye=dict(x=-1.7, y=-1.7, z=0.5),
            up=dict(x=0, y=0, z=1),
        ),
    ),
    margin=dict(l=0, r=0, t=0, b=0),
)

fig.show()

这个代码会生成一个空间曲线，以及在曲线上的某个点处标注出其切向量、主法向量和副法向量。您可以根据需要修改点的位置、曲线的形状等参数。